Comment by Melandroso

The Wyrmtongue Minstrel listed as reward here appears to be a mistake. There is no such pet in the pet interface in-game or on wowhead and the list developed by hevgirl (shown in another comment on this page) has Horde Fanatic (or Alliance Enthusiast) listed as reward instead. If you have one and not the other, go to the relevant quartermaster (Sarah the Savage for horde and Captain Roberts for alliance) in Broken Isles - Dalaran to buy it.

Comment by Melandroso

The Wyrmtongue Minstrel listed as reward here appears to be a mistake. There is no such pet in the pet interface in-game or on wowhead and the list developed by hevgirl (shown in another comment on this page) has Horde Fanatic (or Alliance Enthusiast) listed as reward instead. If you have one and not the other, go to the relevant quartermaster (Sarah the Savage for horde and Captain Roberts for alliance) in Broken Isles - Dalaran to buy it.